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Added digital clock example using drawLine and drawCircle
Signed-off-by: CaptainStouf <stouf@hardware-libre.org>
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‎examples/SSD1306ClockDemo/SSD1306ClockDemo.ino‎

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/**
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* The MIT License (MIT)
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*
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* Copyright (c) 2016 by Daniel Eichhorn
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* Copyright (c) 2016 by Fabrice Weinberg
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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*/
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#include <Wire.h>
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#include <TimeLib.h>
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#include "SSD1306.h"
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#include "SSD1306Ui.h"
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#include "images.h"
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// Initialize the OLED display on address 0x3c
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SSD1306 display(0x3c, 5, 4);
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SSD1306Ui ui ( &display );
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int screenW = 128;
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int screenH = 64;
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int clockCenterX = screenW/2;
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int clockCenterY = ((screenH-16)/2)+16; // top yellow part is 16 px height
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int clockRadius = 23;
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// utility function for digital clock display: prints leading 0
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String twoDigits(int digits){
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if(digits < 10) {
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String i = '0'+String(digits);
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return i;
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}
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else {
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return String(digits);
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}
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}
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void clockOverlay(SSD1306 *display, SSD1306UiState* state) {
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}
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void analogClockFrame(SSD1306 *display, SSD1306UiState* state, int16_t x, int16_t y) {
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// ui.disableIndicator();
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// Draw the clock face
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// display->drawCircle(clockCenterX + x, clockCenterY + y, clockRadius);
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display->drawCircle(clockCenterX + x, clockCenterY + y, 2);
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//
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//hour ticks
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for( int z=0; z < 360;z= z + 30 ){
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//Begin at 0° and stop at 360°
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float angle = z ;
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angle = ( angle / 57.29577951 ) ; //Convert degrees to radians
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int x2 = ( clockCenterX + ( sin(angle) * clockRadius ) );
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int y2 = ( clockCenterY - ( cos(angle) * clockRadius ) );
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int x3 = ( clockCenterX + ( sin(angle) * ( clockRadius - ( clockRadius / 8 ) ) ) );
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int y3 = ( clockCenterY - ( cos(angle) * ( clockRadius - ( clockRadius / 8 ) ) ) );
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display->drawLine( x2 + x , y2 + y , x3 + x , y3 + y);
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}
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// display second hand
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float angle = second() * 6 ;
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angle = ( angle / 57.29577951 ) ; //Convert degrees to radians
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int x3 = ( clockCenterX + ( sin(angle) * ( clockRadius - ( clockRadius / 5 ) ) ) );
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int y3 = ( clockCenterY - ( cos(angle) * ( clockRadius - ( clockRadius / 5 ) ) ) );
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display->drawLine( clockCenterX + x , clockCenterY + y , x3 + x , y3 + y);
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//
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// display minute hand
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angle = minute() * 6 ;
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angle = ( angle / 57.29577951 ) ; //Convert degrees to radians
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x3 = ( clockCenterX + ( sin(angle) * ( clockRadius - ( clockRadius / 4 ) ) ) );
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y3 = ( clockCenterY - ( cos(angle) * ( clockRadius - ( clockRadius / 4 ) ) ) );
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display->drawLine( clockCenterX + x , clockCenterY + y , x3 + x , y3 + y);
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//
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// display hour hand
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angle = hour() * 30 + int( ( minute() / 12 ) * 6 ) ;
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angle = ( angle / 57.29577951 ) ; //Convert degrees to radians
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x3 = ( clockCenterX + ( sin(angle) * ( clockRadius - ( clockRadius / 2 ) ) ) );
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y3 = ( clockCenterY - ( cos(angle) * ( clockRadius - ( clockRadius / 2 ) ) ) );
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display->drawLine( clockCenterX + x , clockCenterY + y , x3 + x , y3 + y);
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}
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void digitalClockFrame(SSD1306 *display, SSD1306UiState* state, int16_t x, int16_t y) {
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String timenow = String(hour())+":"+twoDigits(minute())+":"+twoDigits(second());
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display->setTextAlignment(TEXT_ALIGN_CENTER);
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display->setFont(ArialMT_Plain_24);
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display->drawString(clockCenterX + x , clockCenterY + y, timenow );
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}
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// This array keeps function pointers to all frames
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// frames are the single views that slide in
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FrameCallback frames[] = { analogClockFrame, digitalClockFrame };
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// how many frames are there?
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int frameCount = 2;
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// Overlays are statically drawn on top of a frame eg. a clock
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OverlayCallback overlays[] = { clockOverlay };
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int overlaysCount = 1;
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void setup() {
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Serial.begin(9600);
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Serial.println();
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// The ESP is capable of rendering 60fps in 80Mhz mode
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// but that won't give you much time for anything else
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// run it in 160Mhz mode or just set it to 30 fps
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ui.setTargetFPS(60);
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// Customize the active and inactive symbol
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ui.setActiveSymbol(activeSymbol);
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ui.setInactiveSymbol(inactiveSymbol);
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// You can change this to
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// TOP, LEFT, BOTTOM, RIGHT
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ui.setIndicatorPosition(TOP);
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// Defines where the first frame is located in the bar.
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ui.setIndicatorDirection(LEFT_RIGHT);
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// You can change the transition that is used
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// SLIDE_LEFT, SLIDE_RIGHT, SLIDE_UP, SLIDE_DOWN
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ui.setFrameAnimation(SLIDE_LEFT);
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// Add frames
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ui.setFrames(frames, frameCount);
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// Add overlays
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ui.setOverlays(overlays, overlaysCount);
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// Initialising the UI will init the display too.
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ui.init();
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display.flipScreenVertically();
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unsigned long secsSinceStart = millis();
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// Unix time starts on Jan 1 1970. In seconds, that's 2208988800:
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const unsigned long seventyYears = 2208988800UL;
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// subtract seventy years:
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unsigned long epoch = secsSinceStart - seventyYears * SECS_PER_HOUR;
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setTime(epoch);
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}
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void loop() {
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int remainingTimeBudget = ui.update();
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if (remainingTimeBudget > 0) {
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// You can do some work here
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// Don't do stuff if you are below your
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// time budget.
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delay(remainingTimeBudget);
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}
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}
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‎examples/SSD1306ClockDemo/images.h‎

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const char activeSymbol[] PROGMEM = {
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B00000000,
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B00000000,
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B00011000,
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B00100100,
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B01000010,
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B01000010,
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B00100100,
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B00011000
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};
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const char inactiveSymbol[] PROGMEM = {
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B00000000,
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B00000000,
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B00000000,
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B00000000,
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B00011000,
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B00011000,
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B00000000,
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B00000000
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};

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